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. 2010 Jun 8;118(10):1395–1399. doi: 10.1289/ehp.0901764

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Genetic ancestry of PACE3 participants based on principal component analysis (PCA) with International HapMap samples. Three principal components (PCA1–PCA3) are shown that discriminate the HapMap samples from Northern European (CEU), Yoruban in Ibadan, Nigeria (YRI), Chinese (CHB), and Japanese (JPT) genetic ancestry. Each panel is a plot of two principal component values. PACE3 individuals cluster between the CEU and Asian populations.